[ Grammar & Vocabulary ]
Marco ……………………… this exercise.
A. aren´t understand
B. doesn´t understand
C. isn’t understanding

Random Topics:
Tenses: Present simple, Past Simple, Future SimpleModal Verbs of Deduction and SpeculationGerunds in SentencesDeterminers & QuantifiersModals and Past TensesPhrasal VerbToeic VerbPast SimplePassive of Modal VerbsIrregular verbsOther quiz:
Grammar › ViewAll the judges were impressed with Sally’s dance during the competition. She was _________________.
A. wise like an owl
B. slow like a tortoise
C. agile like a monkey
D. graceful like a swan
Grammar › View
The number of athletes competing in the marathon __________ staggering.
A. is
B. are
C. was
D. were
Grammar › View_____the children______ the Net at weekends?
a. Do … surf
b. Are … surfing
Grammar › View
Jimmy has a high fever, and he ____ in the hospital for a week.
A. was staying
B. is staying
C. has stayed
D. stays
